Louver type K604 featuring a 4-inch frame depth and louver type K606 featuring a 6-inch frame depth are extruded aluminum stationary louvers that are ideal for applications that require intake and exhaust ventilation with moderate protection against water penetration. Their design incorporates non-drainable blades, sloped sill, and hidden vertical mullions when configured as multiple sections wide. Licensed to bear the AMCA seal for Water Penetration and Air Performance, the K604 and K606 can be specified up to a maximum single section size of 120 inches wide by 120 inches high. A variety of options, accessories, and architectural finishes are available.